Dec 30, 2012 4:30am PST
the hospital for more than a month now. >>> the u.n. arab league envoy for syria says the situation in the war torn country is getting worse by the day. this weekend may be proving him right. opposition activists say at least 397 people were killed across syria yesterday alone. if true, it would be the deadliest day yet in almost two years of civil war. the opization says more than 200 of those killed were captured and executed by syrian government forces following a battle. >>> more news at the top of the hour when cnn sunday morning continues. but first "sanjay gupta md" starts now. [ sirens ] >> this is a drug overdose call. every 19 minutes in the united states, someone dies of an accidental overdose. >> this is crazy. not a single solitary one of these people has to die. >> we're used to thinking of it starting here, looking like this. but something happened in this country. and now increasingly, it starts here, in your own home. >> went to sleep, he had no idea this was going to be his last night on earth. >> from misusing perfectly legal prescription drugs. taking a deadly dose.